couchbase

I am new to ElasticSearch and Couchbase. I am building a sample Java application to learn more about ElasticSearch and Couchbase. Reading the ElasticSearch Java API , Filters are better used in cases where sort on score is not necessary and for caching. I still haven't figured out how to use FilterBuilders and have following questions: Can FilterBuilders be used alone to search? Or Do they always have to be used with a Query ? ( If true, can someone please list an example? ) Going through a documentation, if I want to perform a search based on field values and want to use FilterBuilders, how

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm persisting an entity in a CouchBase repository and trying to query it. The entity looks like this: @Document(expiry = 0) public class GsJsonStore implements Serializable { private static final long serialVersionUID = 7133072282172062535L; @Id @GeneratedValue(strategy=GenerationType.AUTO) private long id; @Field private Map<String,Object> _object; @Field private String _subject; @Field private String _predicate; //Getters and Setters } I'm querying the entity by using N1QL queries on the CouchbaseOperations template like this: String

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am trying to write a sample in order to learn couchbase. I am trying to use it with spring boot and it’s crud repositories . So I have downloaded latest docker image but the point is: i could not find the password of the bucket. The couchbase console allows only user creation but in spring, there is no equivalent of this usage like a username/password. It allows only bucketName and password which does not seem compatible with couchbase 5. Am I missing anything here or is spring not compatible with couchbase 5? If spring is not

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm unclear about the requirements for using Couchbase-lite. Is it possible to use Couchbase-lite with CouchDB? Or does Couchbase-lite require Couchbase Server and Sync Gateway? Thanks! 回答1: According to the documents it is 100% compatible with both CouchDB and Couchbase. http://docs.couchbase.com/couchbase-lite/cbl-concepts/#can-couchbase-lite-replicate-with-apache-couchdb-servers Also I found this blog post on syncing IOS with CouchDB, might be useful! http://blog.lunarlogic.io/2013/synchronization-using-couchdb/ Edit Official Couchbase

Write operations on Couchbase accept a parameter cas (create and set). Also the return result object of any non-data fetching query has cas property in it. I Googled a bit and couldn't find a good conceptual article about it. Could anyone tell me when to use CAS and how to do it? What should be the common work-flow of using CAS ? My guess is we need to fetch CAS for the first write operation and then pass it along with next write. Also we need to update it using result's CAS . Correct me if I am wrong. CAS actually stands for check-and-set , and is a method of optimistic locking. The CAS value

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I wanted to know if Couchbase support consistent incremental Counters. From what I've read in this doc , it does not, it just encapsulates a read/write operation so you won't need to do it yourself. Of course this doesn't work for me because the data might change since the time you read the data from the database. 回答1: Couchbase absolutely does, just like memcached and Membase Server, it supports the incr/decr operations atomically within a cluster. cb . set ( "mykey" , 1 ) x = cb . incr ( "mykey" ) puts x #=> 2 incr is both

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I used the online N1QL tutorial to practices writing queries. Now that I have a couchbase server of my own, I want to query my own data. My questions is Where in the Couchbase server can I write my queries? thanks 回答1: Remember that N1Q1 is still in Beta. The way it works is that you have to run Couchbase Query Server (aka CBQ). It runs in a default port 8093 (see N1QL ) The query server will connect to the specified Couchbase instance/cluster. e.g. cbq-engine -couchbase <CB-location> Once CB Query Engine up and running you can run command

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have a set of documents in Couchbase where each may have some users as editors - a set of UserID`s in array. Id like to query all the docs where user with particular userid (username) is not in list of editors? here's what my data looks like: document1: {editors[1,2,3,4]} document2: {editors[1,2,3,4,5]} user{id:5} Regarding the data above - how can I query all the docs of type document where user with id=5 is not listed in editors array - meaning only document1 should return? 回答1: I can't think of a way to do this with Couchbase views,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to make a filterable list of my UserTask entity with the QueryDslPredicateExecutor interface, so the parameters given in the query string will be autoprocessed into a Predicate. I have the following classes/interfaces public interface UserTaskQuerydslRepository extends CrudRepository<UserTask, String>, QueryDslPredicateExecutor<UserTask>, QuerydslBinderCustomizer<QUserTask> { @Override default void customize(QuerydslBindings bindings, QUserTask userTask) { ... } } UserTask is my class that represents the (couchbase) model @QueryEntity

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I want to make a filterable list of my UserTask entity with the QueryDslPredicateExecutor interface, so the parameters given in the query string will be autoprocessed into a Predicate. I have the following classes/interfaces public interface UserTaskQuerydslRepository extends CrudRepository<UserTask, String>, QueryDslPredicateExecutor<UserTask>, QuerydslBinderCustomizer<QUserTask> { @Override default void customize(QuerydslBindings bindings, QUserTask userTask) { ... } } UserTask is my class that represents the (couchbase) model @QueryEntity